Readability Analyzer
Analyse text readability with Flesch-Kincaid scores, sentence length analysis, and grade level estimates. 100% free.
Why Readability Analyzer Matters
Readability directly affects dwell time, bounce rate, and conversion. Visitors who struggle to parse your sentences leave faster — and Google's engagement signals notice. Writing at the right level for your audience keeps them reading and acting.
Engagement
Content at the right reading level keeps visitors on-page longer, reducing bounce rates that harm rankings.
Conversion
Clear, scannable writing converts better — readers who understand you are more likely to trust you and take action.
- Most business content performs best at a Flesch score of 60-70 — plain English that any adult can follow.
- Long sentences are the single biggest readability killer — break anything over 25 words into two sentences.
- Technical audiences tolerate lower scores, but even experts prefer clarity over jargon when given a choice.
How to use Readability Analyzer
Paste Your Draft
Copy your blog post, landing page, or email content into the text area above — at least 50 words for meaningful results.
Review the Flesch Score
Check your score against the grade level guide. Most business content should land between 60 and 75.
Identify Problem Sentences
The long-sentence count flags passages where readers are most likely to lose the thread and disengage.
Revise and Recheck
Break long sentences, replace polysyllabic words, then paste the revised content to confirm improvement.
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Real-time output, no waiting. Results in seconds.
Professional Grade
Trusted data sources used by industry teams.
Pre-Publish Readability QA Workflow
Run every piece of content through a readability check before publishing. A five-minute audit consistently prevents the bounce-rate problems that erode rankings over months.
Recommended implementation sequence
SEO Workflow Map
Set Your Target Score
Decide the appropriate reading level for your audience before drafting — B2C usually aims for 65+, B2B technical content for 50+.
Draft Without Constraints
Write the first draft naturally. Trying to hit a score while writing produces stilted, unnatural copy.
Analyze & Annotate
Paste the draft, note sentences flagged as too long, and mark vocabulary that could be simplified.
Edit & Confirm
Revise the annotated draft, re-analyze, and publish only when the score meets your target.
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Frequently Asked Questions
Everything you need to know about readability analyzer.
For most business content, aim for a score of 60-70 (standard/plain English). For technical audiences, 40-60 is acceptable. Below 30 is very difficult to read and will hurt engagement metrics.
The formula uses average sentence length and average syllables per word. Longer sentences and polysyllabic words lower the score. The target range of 60-70 corresponds to 8th-9th grade reading level.
Not directly, but indirectly through engagement signals. Content that's hard to read drives higher bounce rates and lower dwell time — two behavioural signals that Google uses to assess page quality.
B2B SaaS content typically lands between 45-60. Technical depth naturally lowers scores, but you should still aim for short sentences and active voice to stay as readable as the subject allows.
Fonzy automatically calibrates sentence length, vocabulary, and structure for your target audience — ensuring content is both readable and authoritative without requiring manual editing.
Yes. Every piece of Fonzy-generated content is scored for readability as part of the quality layer before publication. Content that falls outside the target range for your audience is automatically revised.